Diancie-Mega @ Diancite  
Ability: Clear Body  
EVs: 72 HP / 252 Atk / 184 Spe  
Hasty Nature  
- Diamond Storm  
- Moonblast  
- Hidden Power [Ice]  
- Protect  

Thundurus (M) @ Choice Band  
Ability: Defiant  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Knock Off  
- Wild Charge  
- Superpower  
- U-turn  

Aegislash @ Leftovers  
Ability: Stance Change  
EVs: 252 HP / 16 SpA / 240 SpD  
Modest Nature  
IVs: 0 Atk  
- Wide Guard  
- Shadow Ball  
- Flash Cannon  
- King's Shield  

Talonflame @ Life Orb  
Ability: Gale Wings  
EVs: 248 HP / 252 Atk / 8 Spe  
Adamant Nature  
- Brave Bird  
- Tailwind  
- Flare Blitz  
- Protect  

Mew @ Sitrus Berry  
Ability: Synchronize  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
- Fake Out  
- Stealth Rock  
- Super Fang  
- Ice Beam  

Landorus (M) @ Life Orb  
Ability: Sheer Force  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Earth Power  
- Psychic  
- Protect